Hans peteu kab



UNITED STATES PATENT OFFICE.

HANS PETER KARL THEODOR NIELSEN, 0F COPENHAGEN, DENMARK.

PROCESS FOR MANUFACTURING FEAT FUEL.

No Drawing.

To all whom it may concern:

Be it known that I, Hans PETER KARL THEODOR NIELSEN, citizen of theKingdom of Denmark, residing at Copenhagen, Denmark, have invented newand useful- Imrovements in Processes for Manufacturing eat Fuel, ofwhich the following is a specification.

The present invention relates to a process for manufacturing a firm,hard and practically dry fuel from raw peat-mass, without briqueting thesame.

The process consists in the raw peat-mass bein submitted to so-calledwet grinding in a m1 1, preferably a ball-mill or tube-mill, whereby itis comminuted so far that not only the fibrous texture of the peat butalso the cellular structure of the peat fibers have practically disapcared, the cells being torn asunder. Then t e water is allowed to runfrom the peat mass and, the latter is then subjected to ressure wherebyit may be molded into the shape of blocks or the like. If necessary, themass may be further dried by any suitable means, eit er before or afterthe molding. Before grinding the raw mass, it may be necessary to addsome water thereto, in order to give it a suitable mushy orporridge-like consistency.

It has been demonstrated that, after the here mentioned thoroughgrinding, the peat- Specification of Letters Patent.

Patented Oct. '7, 1919.

mass very willingly releases practically its entire contents of water,without the use of artificial means of separation, so that pieces aslarge as small briquets having contained, after the grinding, as much asabout 85% of water would contain, after only a few days of drying in theair, not more than 10 to 15% of water, in which state of dryness thepeat would be of firm consistency and form an excellent fuel.

aving now particularly described and ascertained my said invention andthe manner in which the same is to be performed, I declare that what Iclaim is A process for the production ofpeat fuel from raw peat-mass,characterized by grinding the latter While of the consistency of mush bythe pounding and abrasive action of balls, as in the so-called ballmill, until the cell structure has been disintegrated, so that the wateris liberated and permitted to run from the mass, and after the materialis thus partially dried, subjecting the mass to pressure.

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses.

HANS PETER KARL THEODOR NIELSEN.

Witnesses:

Jtmws Lmmnn, CARL HEMMINGSEN.

